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Question: Answered & Verified by Expert
The instrument used by doctors for endoscopy works on the principle of
PhysicsRay OpticsNEET
Options:
  • A total internal reflection
  • B reflection
  • C refraction
  • D none of the above
Solution:
1155 Upvotes Verified Answer
The correct answer is: total internal reflection
An optical fibre is a transparent thin fibre, usually made of glass or plastic for transmitting light.
Optical fibres are used in imagine optics, and work on the principle of total internal reflection of light.
Bundles of fibres are used along with lenses for long, thin imagine devices called endoscopes, which are used to view objects through a small hole.
Medical endoscopes are used for minimally invasive exploratory or surgical procedures (endoscopy).

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